Safety device for die-holders.



-0. W. VAUGHN. SAFETY DEVICE FOR DIE HOLDERS.

APPLICATION FILED SEPT. 21, 1908.

981,335. Patented Jan.10,1911.

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UNIT SAT CALVIN W. VAUGHN, OF CUYAI-IOGA FALLS, OHIO.

SAFETY DEVICE FOR DIE-HOLDERS.

Specification of Letters Patent.

Application filed September 21, 1908.

To all whom it may concern:

Be it known that I, CALVIN IV. VAUGHN, a citizen of the United States,and a resident of Ouyahoga Falls, county of Summit, and State of Ohio,have invented a new and useful Improvement in Safety Devices for Die-Holders, of which the following is a specification, the principle of theinvention being herein explained and the best mode in which I havecontemplated applying that principle, so as to distinguish it from otherinventions.

This invention relates to apparatus for drawing wire, and has particularregard to the provision of a safety device for use in connection withthe drawing block whereby danger of an employee or other person becomingentangled in the wire, and being thereby dragged into the machinery, ispractically eleminated. The device obviously will be equally adapted toprevent a wire entangling and carrying into the machine any otherobjects that might work disaster there.

To the accomplishment of the foregoing and related ends, said invention,then, consists of the means hereinafter fully described and particularlypointed out in claims.

The annexed drawing and the following description set forth in detailcertain mech anism embodying the invention, such disclosed meansconstituting, however, but one of various mechanical forms in which theprinciple of the invention may be used.

In said annexed drawings :Figure 1 is a side elevation, with a portionbroken away, of my improved safety device for dieholders; Fig. 2 is aplan view of the same, a portion again being broken away in order betterto reveal certain details of the interior construction; and Fig. 3 is anelevation of the opposite side from that shown in Fig. 1, also with aportion broken away.

My safety device, chiefly for reasons of convenience in construction, isshown in its approved form as incorporated in the same structure withthe die-holder. Such holder in the case in hand, comprises an integralcasting A, in one end of which is provided a transverse aperture orrecess a of proper size to receive the die-block A For the purpose ofretaining the block in place in the housing a suitable set bolt a isprovided on its upper face. Pivotally support-ed in said housingtransversely of the same, and one rammed Jan. 10, 1911.

Serial No. 454,078.

above, the other below the line of the wire being drawn through the die,are two short shafts (4 upon which are rigidly mounted cutters a of theform clearly shown in Fig. 1. These cutters in their normal openposition (shown in full lines in Fig. 1), permit the free passagetherebetween of the wire B; upon proper actuation, however of theirrespective shafts, they are swung inwardly and are then adapted to closeupon the wire so as to sever the same, the movement of the wireassisting in this operation as will be obvious.

Actuation of the cutter shafts a to effect the foregoing operation isdesigned to be had from a recurved lever, A pivot-ally attached to theforward end of the housing A on a transverse axis, so as to partiallyinclose the wire B, the latter passing between its respective sideportions. Slidably mount ed within a suitable cap A secured to one sideof the housing, is a bar a that is pivotally attached at its outer endto said lever A, while its inner end is formed with rack teeth a thatrespectively engage pinions a on the corresponding ends of the twocutter shafts. Oscillation of the lever toward the housing, it willaccordingly be seen, will serve to simultaneously actuate these shaftsto swing the cutters a inwardly in the manner previously described. Suchinward movement of the rack-bar, or slide, is limited by contact of theedges of the cutters, whereby the wire is severed, while the barsoutward movement is similarly limited by engagement of a pin a on itsouter face adapt ed to engage an off-set, or shoulder, a on the innerface of cap A From the foregoing description of the construction of myimproved die-holder, the mode of operation thereof should be readilyapparent. Should an employee, or any other object, become entangled inthe wire, as frequently occurs in wire mills, and be drawn toward thedie, he or it must of necessity come in contact with the lever A andforce the same toward the housing with the result that the wire ispromptly severed and injury to the employee, and damage to the machine,both avoided.

Other modes of applying the principle of my invention may be employedinstead of the one explained, change being made as regards the mechanismherein disclosed, provided the means stated by any one of the followingclaims or the equivalent of such stated means be employed. 7

I therefore particularly point out and distinctly claim as myinvention 1. In a device of the character described, the combination ofa housing in line with the Wire being drawn for the reception andretention of the die, cutters pivotally supported in said housing onopposite sides of such wire and adapted on being swung together to severthe same, a lever pivotally attached to said housing, and a slidepivotally connected at one end with said lever and having gearedconnection at the other with said cutters.

2. In a device of the character described, the combination of a housingin line with the wire being drawn for the reception and retention of thedie, two transverse rotatable shafts arranged on opposite sides of thewire, cutting members respectively attached to said shafts, a pinion onthe end of each shaft, a slide provided with rack teeth meshingwith'said pinions, and a lever pivotally attached to said housing andpivotally connected with said slide.

3. In a device of the character described, the combination of a housingin line with the wire being drawn for the reception and retention of thedie, two transverse rotatable shafts arranged on opposite sides of thewire, cutting members respectively attached to said shaft-s, a pinion onthe end of each shaft, a slide provided with rack teeth meshing withsaid pinions, a lever pivotally attached to said housing and pivotallyconnected with said slide, a shoulder provided in said housing, and apin borne by the slide and adapted to engage said shoulder.

Signed by me this 18th day of September,

CALVIN W. VAUGHN. Attested by:

HARRY THOMPSON, FRED TREAT.

